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为了保证在地表以下160～230m深处爆破震中上部地表住宅区建筑物的爆破地震安全,取作为其主要准则的土体移动逮度不超过1cm/s。研究结果证实,地震波沿岩石层理传到地表的那些地点的土体移动速度为其它地点的1.5～1.9倍,而沿基岩断口传至地表的那些地点的地震强度为其它地点的1.3～1.4倍。提出了微差起爆时1段延期的容许药量和瞬发起爆时容许药量的计算公式。
In order to ensure the safety of blasting earthquakes in residential buildings above the epicenter in the depth of 160 ~ 230m below the earth’s surface, soil movement should not exceed 1cm / s as the main criterion. The results of the study confirm that earthquakes move 1.5 to 1.9 times faster than those at other sites along the rock strata that reach the surface, and those at other sites reach 1.3 to 1.4 at other sites Times The allowable dosage of one-stage delay and the formula of the allowable dosage for instant detonation are proposed.